Reactivity of Elements MCQ (Multiple Choice Questions) PDF - 2

MCQ 6: The density of Osmium is

1. 20.5 g/cm₃
2. 21.5 g/cm₃
3. 22.5 g/cm₃
4. 23.5 g/cm₃

MCQ 7: The indicator used in the Mohr's method is

1. Starch
2. Potassium Chromate solution
3. Potassium nitrate
4. Methyl orange

MCQ 8: Ionization energy of Mg → Mg ₊₁ +1e _- is

1. 513 KJ/mol
2. 738 KJ/mol
3. 1451 KJ/mol
4. 1480 KJ/mol

MCQ 9: For colligative properties, the solute should not be

1. Non-volatile
2. Concentrated
3. Dilute
4. Non-electrolyte

MCQ 10: The ability of an element to lose electrons and form positive ions is called

1. Electronegative character
2. Electropositive character
3. Rate of reaction
4. Chemical reactivity